AudioFileDevice.h

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/*
 * AudioFileDevice.h - base-class for audio-device-classes which write
 *                     their output into a file
 *
 * Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_AUDIO_FILE_DEVICE_H
#define LMMS_AUDIO_FILE_DEVICE_H
 
#include <QFile>
 
#include "AudioDevice.h"
#include "OutputSettings.h"
 
namespace lmms
{
 
class AudioFileDevice : public AudioDevice
{
public:
        AudioFileDevice(OutputSettings const & outputSettings,
                        const ch_cnt_t _channels, const QString & _file,
                        AudioEngine* audioEngine );
        ~AudioFileDevice() override;
 
        QString outputFile() const
        {
                return m_outputFile.fileName();
        }
 
        OutputSettings const & getOutputSettings() const { return m_outputSettings; }

        virtual void writeBuffer(const SampleFrame* buf, const f_cnt_t frames) = 0;
 
protected:
        int writeData( const void* data, int len );
 
        inline bool outputFileOpened() const
        {
                return m_outputFile.isOpen();
        }
 
        inline int outputFileHandle() const
        {
                return m_outputFile.handle();
        }
 
private:
        void startProcessingImpl() override {}
        void stopProcessingImpl() override {}
 
        QFile m_outputFile;
        OutputSettings m_outputSettings;
} ;
 
using AudioFileDeviceInstantiaton
        = AudioFileDevice* (*)(const QString&, const OutputSettings&, const ch_cnt_t, AudioEngine*, bool&);
 
} // namespace lmms
 
#endif // LMMS_AUDIO_FILE_DEVICE_H